Device for tripping the blades of wind and water wheels



July 13, 1926. 1,592,242

K: H- P. WELSCH DEVICE FOR TRIPPING THE BLADES OF WIND AND WATER WHEELSFiled July 10. 1925 duly l3, ldilti.

ill ll l lllh STATES KARL HERMANIT PAUL XVELSCY-I, OF HAMBURG, GERMANY.

DEVICE FOR TRIPPING THE BLADES OF WIND AND \VATER Application filed July10, 1925, Serial No.

The present invention refers to a de "vice for stopping wind andwaterwheels having blades arranged parallel to the axes of the wheel.This device consists of latches or sliding bolts, one latch beingprovided each blade. Each latch is springpressed and engages a notchedmember arranged on the shaft of theblade to lock the shaft and thusiholdthe blade in its working position. .Each latch is provided with pulloperating means which reaches to the stand of the operator so as toenable one from this place to withdraw the latches from engagement withthe shafts of the blades, and thus trip the blades, whereupon the lattercan no longer tend to rotate the wheel under the action of the force ofwind or water. N hen the operating means 1s released the latch under theaction of its ring can again engage a notched memother to form groups insuch a manner that by pulling one member a complete group of blades canbe tripped together.

In the c rawing 15 a diagrammatlcal plan view of the wind and waterwheel, the

various blades being interconnected to form groups. v

Fig. 2 is a View of a tripping device, the blades being shown broken011, and the rim of the wheel being shown in section.

- Figs. 3 and 4 are plan views of a tripping device in two differentpositions.

Fig. 5 is a sectional diagrammatical new of the means for operating thetripping device.

Fig. 6 is a section on line 6-6 of Fig. 5, and

F 7 is a section on line 7-7 of Fig. 5. The shaft 2 of the blades 1 isprovided with a notch 3 preferably by making use of a diskdike hub 4,which in the construction shown is arranged eccentrically on the shaft2. A latch 6, slidably guided on the rim or curb of the wheel, isconnected with a spring 5 tending to hold the latch 6 in engagement withthe notch 3 on the hub 4. For guiding the latch 6 two'brackets 7 and 8are mounted on the rim. A prolongation 5 of the latch has a slot and pinconnection with a lever 9, which is rotatively connected by a pin 10 tothe rim or curb 11. The free end of the lever 9 is engaged preferably bya 42,840, and in Germany August 19, 1924.

wire rope 12, which is led up to the stand of the operator. In theconstruction shown five latches 6 are connected with each wire rope l2and the wire ropes 12 are each c011- ropes 13 and 14 the connectedlevers 9 will be moved from the position shown in Fig. 3 to the positionshown in Fig. 4, in which the latches 6 are pulled out of the notches 3of the shaft hubs 4, thus tripping the blades so that they no longer canoffer any resistance to the force of the wind or water but swing out inthe direction of the stream or current, Fig. 4.

When all the draw-ropes 13 and 14 are pulled all blades will be trippedso that the wheel is stopped. It is however preferable, as is shown inthe drawing, to construct the device in such a manner that the bladescan be tripped in groups. Thus the blades 0f nected with a rope 13 or14. By pulling the group I are interconnected, and those of group II areseparately interconnected, so that each group can be releasedindependently, and the operator is thus enabled to trip, for example,one-half of the complete number of blades, and allow the other half ofthe blades to operate, thus allowing the wheel to work at half power.

Each rope 13 of the group I blades as indicated in Fig. 1, passes over aroller 15 and is connected to a plate 16 embracing a vertically movabletube 17. In a similar manner the ropes 14 of the group II blades asindicated in Fig. 1, passes over a roller 18 to a plate 19 which isconnected, preferably rotatably, with a spindle 20. The spindle 20telescopes within the tube 17 and is connected with an operating rope21, while the tube 17 is connected in a similar manner with an operatingrope 22. When the operator pulls on either therope 22 or the ropev 21all the blades of the group I or ofthe group II respectively, will betripped. When the operator pulls on both ropes 22 and 21 all the bladesare tripped and thus the wheel is stopped.

When thereupon the ropes are released the latches 6, owing to theirsprings 5, will be moved forward again. At first single latches willengage with such corresponding notches 3 as happen to be in positiontherefor, that is those notches which at that moment are tangential tothe rim 11. Upon the slightest wind these blades will start to move thewheel, whereupon the notches of the other blades will coincide with thecorresponding latches, thus allowinggtheselateheslerating means beingconnected to. separate also to' loclz" the-blades in position withregroups of blades whereby to enable complete gard to the Wheel, whichblades are then engroups of blades to be acted on together. abled t0transmitepower.to thewheehandin 3; A device according toclaim 1, a thesame manner one by one the other blades notched hub on the shaft of eachblade 'conwill be lockedauntili all blades are again.- in. stituting:the notch part; operative position. i. A device according to claim 1, aI claim: notched liub inithe form of anreccentric disk 1. A device forstopping Wind and water on the shaft of each blade constituting thewheel's-Which have blades arranged parallel notched part; to the axis ofthe wheel, comprising, a 5. A device according toiolttim 1; theopspring-presaed latch guided rectangularliv to crating; means,comprising, for each latch, tlreshaft of each blade, a notched' part onm lei-er, apin and slot connection between the shaft of each blade, eachlatch being a'rthe'lever and t'he latch, and a rope engaging ranged toengage in a notch, and operating the-levers; nieansi'or Withdrawing thelatches from the In testimony whereof I have signed my notches; name tothis specification.

:2. A device according to claim 1, the op KARE HERMANXPAUL VELtlQ-H.

